【題目】 Today, computers are really helpful. They ______ everywhere.

A. use B. are used C. usedD. were used

【答案】B

【解析】

試題分析:根據(jù)語境可知此題考查的是一般現(xiàn)在時(shí)的被動語態(tài)的基本構(gòu)成和用法。整個(gè)文句的含義是現(xiàn)在電腦非常有用,他們被應(yīng)用到各個(gè)領(lǐng)域,主語是they,電腦,是動作的承受者,并且是習(xí)慣性的動作,故用一般現(xiàn)在時(shí)的被動語態(tài)。主語是復(fù)數(shù)故選B。

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